Air-forcing device for gas-machines



(No Model.)

J. H. GRAF. AIRVFORGING DEVICE FOR GAS MAGHINBS. No. 564,786. PatentedJuly 28, 1896.

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UNITED STATES PATENT OFFICE.

JOHN HENRY GRAF, OF REED CITY, MICHIGAN.

AlR-FORCING DEVICE FOR GAS-MACHINES.

SPECIFICATION forming part of Letters Patent No. 564,786, dated July 28,1896.

Application filed April 7, 1894. Renewed. November 4,1895. Serial No.567,954. (No model.)

To all whom it may concern:

Be it known that I, JOHN HENRY GRAF, a citizen of thelUnited States,residing at Reed City, in the county of Osceola and State of Michigan,have invented certainnew and useful Improvements in Air-Forcing Devicesfor Gas-Machines; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters andfigures of reference marked thereon, which form a part of thisspecification.

The special object of the invention is to provide an apparatus of suchconstruction that it will cause a partial vacuum and draw vapor from theliquids used, causing a constant stream of air to the carburetor of agas apparatus.

Figure 1 of the drawings is a perspective view, and Fig. 2 is a detailside elevation.

In the drawings, A represents a vessel which is filled aboutthree-fourths full of water by means of the supply-pipe a, provided withstop-cock a and emptied by a faucet a at the bottom.

B B are alternating plungers open at the bottom, but closed at the top,where an airvalve b is provided, which closes the opening or seat on theinside. This valve is pivotally connected with a lever E by the rod e,while the lever is supported on a fulcrum-post e from the top of theplunger, and provided at one end with a weight 3, this end of leverbeing preferably turned up to prevent the es cape of the weight.

Rising from the inner end of each plunger B is a stop a", which servesto regulate the distance that the inner ends of the levers E shalldescend as the plunger rises for the purpose of opening the air-valvesand admiting air to the plungers.

Extending upward from the center of the vessel is the post D, in theupper end of which the operating hand-lever is pivoted, and to one sideof which the two vertically-disposed plates F are applied, and held inposition against the side of the post by the guide-pins a: and thespring f. The ends of the levers E are placed between these plates F andthe side of the post, and the plates exert sufficient frictional contacton the ends of the levers to hold them stationary when the plungersdescend, so as to first close the air-valves, and then the ends of thelevers are drawn downward by the valve-rods e, as the plungers continueto descend, against the frictional contact of the plates F. As soon asthe plungers begin to rise the frictional contact of the plates F firstresists any upward movement of the ends of the levers, so as to open theair-valves and permit the plungers to fill, and then when the upwardmovement of the plungers forces the stops e up against the lower edgesof the levers the ends of the levers are forced upward against thefrictional contact of the plates F. Owing to the weights e on thelevers, and which have a constant tendency to close the air-valves, thefrictional contact of the plates need not be very great.

In order to guide the plungers vertically, rods 1 rise from the vesselany suitable distance upward, and each plunger has a groovedfriction-roller 2secured to each of its ends, and these rollers catchagainst the rods and prevent the plungers from having any but a verticalmovement. The dotted line indicates the height of the water in' thevessel.

0 is a vessel for hydrocarbon, connected by hose-pipe H with theinterior of the plungers, so that the alternate descent of the plungersinto the water may force the air through the pipes H H nearly to thebottom of the vessel 0. As this air rises through the hydrocarbon in thevessel 0 it becomes charged and is carried through the pipes I to itsdestination, a constant stream of gas being blown through said pipe.

Having thus described my invention, I claim- A gas-manufacturingapparatus consisting of a tank A, plungers B B open at their bottoms andhaving an inlet-valve on top; and weighted levers E E connected by a rodwith said inletvalves; uprights e on which the levers are fulcrumed; apost D, spring-plates F pressing the free ends of the levers to thepost, and means for reciprocating the plungers, all combined to operatetogether substantially as and for the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN HENRY GRAF.

Witnesses:

AUGUST 0. Gonnnnun, WILLIAM M. Gonnnnun.

